I played this game for awhile on multiple worlds, and while it was sort of fun while it lasted, in the end the game isn't worth it.
The game is nothing but a "Pay to Win" game.
Whether it's buying more cards or buying Premium Tokens, both give very big unfair advantages.
To even keep up with many other players in the worlds, you will need to spend bunch of actual money to progress, otherwise you will lose fast.
Despite my game time, i give this a "Not Reccomended" to save you the 100's upon 1000's of hours you would waste on it, only for some pay to win person to raze or capture all your villages, thus making you start all over.
Also, i'd like to add unless you join a brand new world the moment it's active, it will be extremely hard to get far on it.
You can use cards you aquired from other worlds in the new world, which is 1 way people stock up to get very far in new worlds.
And, usually within the first 48 to 72 hours, people will be already Rank 14 to 16 (or higher), and start taking over major parts of the world, making factions, join big houses, and conquer large areas.
Then if they move to your area, some may bully you to give up your Parish(es), or may even capture/raze your villages, just to clear you out so you don't vote for somebody else.
(The above happened to me a few times on multiple worlds.)
Also, the game has an "Inactive" system. Info below (Copied from wiki)
A village will be automatically abandoned when a player hasn't played or is dormant for a specific period of time; this time is dependant upon which rank they have reached.
The higher the rank, the longer it takes for the village to become abandoned.
If a premium token is in play at the time of going inactive, the player's account (and therefore, their village) will remain active until the premium token runs out.
More Info on days here: http://help.strongholdkingdoms.com/index.php/FAQ:Your_village#What_happens_with_inactive_players.3F
So basically, depending on your rank, if you don't sign on after xx many of days (whether you forget, internet is down, computer is broken, etc.), ALL VILLAGES you have in that world will be deleted.
Now, you will keep your same rank along with all you researched, but you will have to start over with only 1 village.
And even if you restart, there is a low chance you can be placed in the same area you were previously located.
And people that downvote this Review, are most likely the "Pay to Win" or "Bully" people I mentioned.
Don't let them sucker you into thinking it's not pay to win.
They most likely want more people to attack, so they can gain honour faster as well as maybe get free villages that you did the work setting up, but they take the rest.